package com.wang.controller;

import cn.hutool.core.date.DateUnit;
import cn.hutool.core.date.DateUtil;
import cn.hutool.json.JSONObject;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.request.AlipayTradeRefundRequest;
import com.alipay.api.response.AlipayTradeRefundResponse;
import com.wang.common.Result;
import com.wang.common.config.AliPayConfig;
import com.wang.controller.dto.AliPay;
import com.wang.entity.Orders;
import com.wang.mapper.OrdersMapper;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("/alipay")
public class AliPayController {
//    @Resource
//    private OrdersMapper ordersMapper;
//
//    @GetMapping("/pay") // &subject=xxx&traceNo=xxx&totalAmount=xxx
//    public String pay(AliPay aliPay) {
//        AlipayTradePagePayResponse response;
//        try {
////            //  发起API调用（以创建当面付收款二维码为例）
////            response = Factory.Payment.Page()
////                    .pay(URLEncoder.encode(aliPay.getSubject(), "UTF-8"), aliPay.getTraceNo(), aliPay.getTotalAmount(), "");
//            response = Factory.Payment.Page()
//                    .pay(aliPay.getSubject(), aliPay.getTraceNo(), aliPay.getTotalAmount(), "");
//        } catch (Exception e) {
//            System.err.println("调用遭遇异常，原因：" + e.getMessage());
//            throw new RuntimeException(e.getMessage(), e);
//        }
//        return response.getBody();
//    }
//
//
//    @PostMapping("/notify")  // 注意这里必须是POST接口
//    public String payNotify(HttpServletRequest request) throws Exception {
//        if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {
//            System.out.println("=========支付宝异步回调========");
//
//            Map<String, String> params = new HashMap<>();
//            Map<String, String[]> requestParams = request.getParameterMap();
//            for (String name : requestParams.keySet()) {
//                params.put(name, request.getParameter(name));
//                // System.out.println(name + " = " + request.getParameter(name));
//            }
//
//            String tradeNo = params.get("out_trade_no");
//            String gmtPayment = params.get("gmt_payment");
//            String alipayTradeNo = params.get("trade_no");
//            // 支付宝验签
//            if (Factory.Payment.Common().verifyNotify(params)) {
//                // 验签通过
//                System.out.println("交易名称: " + params.get("subject"));
//                System.out.println("交易状态: " + params.get("trade_status"));
//                System.out.println("支付宝交易凭证号: " + params.get("trade_no"));
//                System.out.println("商户订单号: " + params.get("out_trade_no"));
//                System.out.println("交易金额: " + params.get("total_amount"));
//                System.out.println("买家在支付宝唯一id: " + params.get("buyer_id"));
//                System.out.println("买家付款时间: " + params.get("gmt_payment"));
//                System.out.println("买家付款金额: " + params.get("buyer_pay_amount"));
//
//                // 更新订单未已支付
//                ordersMapper.updateState(tradeNo, "已支付", gmtPayment, alipayTradeNo);
//            }
//        }
//        return "success";
//    }
private static final String GATEWAY_URL = "https://openapi.alipaydev.com/gateway.do";
private static final String FORMAT = "JSON";
private static final String CHARSET = "UTF-8";
    //签名方式
private static final String SIGN_TYPE = "RSA2";

    @Resource
    private AliPayConfig aliPayConfig;

    @Resource
    private OrdersMapper ordersMapper;

    @GetMapping("/pay") // &subject=xxx&traceNo=xxx&totalAmount=xxx
    public void pay(AliPay aliPay, HttpServletResponse httpResponse) throws Exception {
        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API
        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),
                aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);

        // 2. 创建 Request并设置Request参数
        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();  // 发送请求的 Request类
        request.setNotifyUrl(aliPayConfig.getNotifyUrl());
        JSONObject bizContent = new JSONObject();
        bizContent.set("out_trade_no", aliPay.getTraceNo());  // 我们自己生成的订单编号
        bizContent.set("total_amount", aliPay.getTotalAmount()); // 订单的总金额
        bizContent.set("subject", aliPay.getSubject());   // 支付的名称
        bizContent.set("product_code", "FAST_INSTANT_TRADE_PAY");  // 固定配置
        request.setBizContent(bizContent.toString());

        // 执行请求，拿到响应的结果，返回给浏览器
        String form = "";
        try {
            form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        httpResponse.setContentType("text/html;charset=" + CHARSET);
        httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面
        httpResponse.getWriter().flush();
        httpResponse.getWriter().close();
    }

    @PostMapping("/notify")  // 注意这里必须是POST接口
    public String payNotify(HttpServletRequest request) throws Exception {
        if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {
            System.out.println("=========支付宝异步回调========");

            Map<String, String> params = new HashMap<>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (String name : requestParams.keySet()) {
                params.put(name, request.getParameter(name));
                // System.out.println(name + " = " + request.getParameter(name));
            }

            String tradeNo = params.get("out_trade_no");
            String gmtPayment = params.get("gmt_payment");
            String alipayTradeNo = params.get("trade_no");

            String sign = params.get("sign");
            String content = AlipaySignature.getSignCheckContentV1(params);
            boolean checkSignature = AlipaySignature.rsa256CheckContent(content, sign, aliPayConfig.getAlipayPublicKey(), "UTF-8"); // 验证签名
            // 支付宝验签
            if (checkSignature) {
                // 验签通过
                System.out.println("交易名称: " + params.get("subject"));
                System.out.println("交易状态: " + params.get("trade_status"));
                System.out.println("支付宝交易凭证号: " + params.get("trade_no"));
                System.out.println("商户订单号: " + params.get("out_trade_no"));
                System.out.println("交易金额: " + params.get("total_amount"));
                System.out.println("买家在支付宝唯一id: " + params.get("buyer_id"));
                System.out.println("买家付款时间: " + params.get("gmt_payment"));
                System.out.println("买家付款金额: " + params.get("buyer_pay_amount"));

                // 更新订单未已支付
                ordersMapper.updateState(tradeNo, "已支付", gmtPayment, alipayTradeNo);
            }
        }
        return "success";
    }
    @GetMapping("/return")
    public Result returnPay(AliPay aliPay) throws AlipayApiException {
        // 7天无理由退款
        String now = DateUtil.now();
        Orders orders = ordersMapper.getByNo(aliPay.getTraceNo());
        if (orders != null) {
            // hutool工具类，判断时间间隔
            long between = DateUtil.between(DateUtil.parseDateTime(orders.getPaymentTime()), DateUtil.parseDateTime(now), DateUnit.DAY);
            if (between > 7) {
                return Result.error("-1", "该订单已超过7天，不支持退款");
            }
        }


        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API
        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL,
                aliPayConfig.getAppId(), aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET,
                aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);
        // 2. 创建 Request，设置参数
        AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
        JSONObject bizContent = new JSONObject();
        bizContent.set("trade_no", aliPay.getAlipayTraceNo());  // 支付宝回调的订单流水号
        bizContent.set("refund_amount", aliPay.getTotalAmount());  // 订单的总金额
        bizContent.set("out_request_no", aliPay.getTraceNo());   //  我的订单编号

//        返回参数选项，按需传入
        //JSONArray queryOptions = new JSONArray();
        //queryOptions.add("refund_detail_item_list");
        //bizContent.put("query_options", queryOptions);

        request.setBizContent(bizContent.toString());

        // 3. 执行请求
        AlipayTradeRefundResponse response = alipayClient.execute(request);
        if (response.isSuccess()) {  // 退款成功，isSuccess 为true
            System.out.println("调用成功");
            // 4. 更新数据库状态
            ordersMapper.updatePayState(aliPay.getTraceNo(), "已退款", now);
            return Result.success();
        } else {   // 退款失败，isSuccess 为false
            System.out.println(response.getBody());
            return Result.error(response.getCode(), response.getBody());
        }

    }

//    @GetMapping("/return")
//    public Result returnPay(AliPay aliPay) throws AlipayApiException {
//        // 7天无理由退款
//        String now = DateUtil.now();
//        Orders orders = ordersMapper.getByNo(aliPay.getTraceNo());
//        if (orders != null) {
//            // hutool工具类，判断时间间隔
//            long between = DateUtil.between(DateUtil.parseDateTime(orders.getPaymentTime()), DateUtil.parseDateTime(now), DateUnit.DAY);
//            if (between > 7) {
//                return Result.error("-1", "该订单已超过7天，不支持退款");
//            }
//        }
//
//
//        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API
//        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL,
//                aliPayConfig.getAppId(), aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET,
//                aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);
//        // 2. 创建 Request，设置参数
//        AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
//        JSONObject bizContent = new JSONObject();
//        bizContent.set("trade_no", aliPay.getAlipayTraceNo());  // 支付宝回调的订单流水号
//        bizContent.set("refund_amount", aliPay.getTotalAmount());  // 订单的总金额
//        bizContent.set("out_request_no", aliPay.getTraceNo());   //  我的订单编号
//
////        返回参数选项，按需传入
//        //JSONArray queryOptions = new JSONArray();
//        //queryOptions.add("refund_detail_item_list");
//        //bizContent.put("query_options", queryOptions);
//
//        request.setBizContent(bizContent.toString());
//
//        // 3. 执行请求
//        AlipayTradeRefundResponse response = alipayClient.execute(request);
//        if (response.isSuccess()) {  // 退款成功，isSuccess 为true
//            System.out.println("调用成功");
//
//            // 4. 更新数据库状态
//            ordersMapper.updatePayState(aliPay.getTraceNo(), "已退款", DateUtil.now());
//            return Result.success();
//        } else {   // 退款失败，isSuccess 为false
//            System.out.println(response.getBody());
//            return Result.error(response.getCode(), response.getBody());
//        }
//
//    }


}
